What's going on, Denver?
If your heat is already running every night, you're not alone. Denver's first freeze came on October 16 this year, according to the National Weather Service office in Boulder. That's a little later than the long-term average of October 7, but either way, furnace season is here. Your furnace has a lot of work ahead of it before spring.
If you've been wondering what a furnace tune-up includes — and whether now is a good time to schedule one — here's a straightforward look at what we check for homes in the Denver south metro. Mission Mechanical is also running our End of Year Special: a $99 furnace tune-up. The visit takes about an hour, we work on any make, and a replacement filter is not included. Here's what's included, why maintenance matters here, and how to book.
What does a furnace tune-up include?
For $99, a Mission Mechanical technician comes out to inspect, clean, and adjust your furnace so it's ready for the cold. The visit takes about an hour, and we work on all HVAC equipment, whatever the make or model.
Two things to know up front, because we'd rather tell you now than surprise you later:
Replacement filters aren't included in the $99. Your tech will check your current filter and tell you if it needs replacing. If you want a new one, it's priced separately.
Parts and repairs aren't included either. If your tech finds something, they'll explain it and give you the price before doing any repair work. You decide what happens next. Nothing gets done without your OK.
A furnace tune-up checklist
This is the list we work through on a typical tune-up:
Controls and airflow
Air filter condition
Thermostat operation and calibration
Airflow and supply/return registers
Temperature rise across the furnace
Ignition and burners
Inspect and clean the flame sensor
Inspect the igniter / hot surface ignition
Inspect the burners and burner flame
Check gas pressure and gas valve operation
Safety checks
Inspect the heat exchanger for visible cracks or damage
Test for carbon monoxide at the furnace and flue
Inspect the venting and flue pipe
Check inducer (draft) motor operation
Test pressure switches and safety limit controls
Blower and electrical
Inspect the blower motor and blower wheel
Measure motor amp draw and check the capacitor
Tighten electrical connections and inspect wiring
Drainage (high-efficiency units)
Inspect and flush the condensate line and drain
The final test
Run a full heating cycle and verify safe startup and shutdown
When we're done, your tech will walk you through what they found and let you know if anything needs attention. No pressure, no sales pitch. If it all looks good, we'll tell you that too.
Why furnace maintenance matters in Denver
Furnaces work harder here than in a lot of places. A few reasons:
Altitude. At 5,000-plus feet the air is thinner, and that affects combustion. A tune-up helps make sure your furnace is burning cleanly and safely at our elevation.
Big temperature swings. A 60-degree afternoon followed by a freezing night means more on/off cycles, and more wear on parts.
Dust and smoke. Dry air, dust, and wildfire smoke clog filters and flame sensors faster than you'd expect.
Fewer breakdowns. A lot of no-heat calls start as small issues a tune-up can catch.
Lower energy bills. A clean, well-adjusted furnace doesn't have to work as hard.
Warranty. Many manufacturers require yearly maintenance to keep a warranty valid. Check your terms.
Maintenance also helps your system last. Most furnaces last 15 to 20 years with proper care, meaning yearly inspections and timely filter changes. Speaking of filters: plan on changing yours every one to three months. A clogged filter makes your system work harder and lowers your indoor air quality.
When to schedule a furnace tune-up
Early fall is the ideal time, before you depend on your heat every day. But a tune-up in November, December, or even mid-winter still helps. Better to get it done now than to wait for a cold snap to show you the problem.
Who it's for
We're a family-owned company based in Lone Tree, and the $99 tune-up is available across our Denver south metro service area, including Littleton, Highlands Ranch, Centennial, Lone Tree, Parker, Castle Rock, Englewood, and Greenwood Village. Not sure if we cover your address? Check our HVAC service areas page or just give us a call.
How to book
It's simple:
Call (720) 390-0699.
Mention the $99 End of Year Special furnace tune-up.
Pick a weekday time that works for you. Office hours are Monday to Friday, 8 AM to 5 PM.
Prefer to book online? Use our request service form and we'll get back to you during business hours.
Heat already out? Don't wait for a tune-up slot. Call (720) 390-0699 any time. We offer 24/7 emergency service.
Want both seasons covered?
If you'd like us to take care of your system all year, our Home Comfort Plan includes a fall furnace tune-up and a spring AC tune-up for $199 a year, plus priority scheduling and 10% off repairs. Not ready to commit? The $99 furnace tune-up is an easy way to try us out, and you can join the plan anytime.
Let's get your furnace ready
Winter in Denver is just getting started. If you want the full picture of what's included and you'd like to book our $99 End of Year Special furnace tune-up, we're ready when you are.
Call Mission Mechanical at (720) 390-0699 or book our $99 End of Year Special furnace tune-up. You can also email us at missionmech.denver@gmail.com.